通过采取更好的坐姿，你的腹部马上就会看起来平坦一些。You can make your stomach look flatter instantly by improving your posture.丘陵就在大山以南变得平坦起来。The hills flattened out just south of the mountain.路变得陡直起来，然后又突然变平坦了。The road steepened and then levelle...
海鸠们潜到海水里去, 间或衔出覆有石油的海藻来筑窝.Guillemots dived into the sea, sometimes picking up oil - coated pieces of seaweed for their nests.北部海域的蹼足潜水海鸟;海雀;角嘴海雀;海雀科鸟;海鸠;等.Any of various small auks ( genus Aethia and related genera ) of ...